Duolingo English Test is an international English proficiency test, driven by Artificial Intelligence. It is a fast, accessible and affordable online test, accepted by over 5,000 institutions and programs worldwide. Duolingo English Test is an online computer adaptive test, which allows students to evaluate their English ability anytime and anywhere. The test lasts 1 hour, measuring speaking, writing, reading, and listening and integrates a proficiency score, video interview, and writing sample. Students receive results within 2 days. There are no appointments or test centers. Students can take the test in a private room at home.